---
id: CVE-2026-72805
title: >-
  SiYuan versions before v3.7.4 fail to enforce publish-access checks on
  getBlockBreadcrumb, getRefText, and getBlockTreeInfos endpoints, allowing
  disclosure of protected document content and metadata
summary: >-
  SiYuan versions before v3.7.4 fail to enforce publish-access checks on
  getBlockBreadcrumb, getRefText, and getBlockTreeInfos endpoints, allowing
  disclosure of protected document content and metadata. Anonymous readers or
  publish RoleRead…
severity: medium
cvss: 5.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'
cwe:
  - CWE-862
published: '2026-08-12'
updated: '2026-08-14'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72805'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-67x2-mq63-v9vm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-block-endpoints
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-67x2-mq63-v9vm
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72805'
  - url: >-
      https://github.com/siyuan-note/siyuan/commit/931ba693375ea9877b2ef74f9bfb632fad5bab3f
  - url: 'https://github.com/siyuan-note/siyuan'
tags:
  - nvd
  - osv
  - go
epss: 0.00325
epssPercentile: 0.22819
ingestedAt: '2026-08-15T21:29:27.210Z'
aliases:
  - GHSA-67x2-mq63-v9vm
  - GO-2026-6387
ecosystem: go
vendor: siyuan-note
product: github.com/siyuan-note/siyuan/kernel
affected:
  - github.com/siyuan-note/siyuan/kernel < 0.0.0-20260723163028-931ba693375e
patched:
  - github.com/siyuan-note/siyuan/kernel 0.0.0-20260723163028-931ba693375e
---

## Overview

SiYuan versions before v3.7.4 fail to enforce publish-access checks on getBlockBreadcrumb, getRefText, and getBlockTreeInfos endpoints, allowing disclosure of protected document content and metadata. Anonymous readers or publish RoleReader accounts can retrieve document titles, ancestor block content snippets, reference text, and path metadata for publish-forbidden or password-protected documents by supplying block IDs.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-72805)

Affected packages:

- `github.com/siyuan-note/siyuan/kernel < 0.0.0-20260723163028-931ba693375e`

Patched in:

- `github.com/siyuan-note/siyuan/kernel 0.0.0-20260723163028-931ba693375e`

Source: https://osv.dev/vulnerability/GHSA-67x2-mq63-v9vm